Malicious PDF — malware analysis report

Static analysis result for SHA-256 84049920f9d89889…

MALICIOUS

PDF

41.4 KB Created: 2020-08-31 12:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bccccbb2506fd04a95b22446f2253237 SHA-1: 60ea959e9f59c884b535085ab7c557cccb7d8c66 SHA-256: 84049920f9d89889bec89075d589fd67d9b986ed20882587a3bd20b1f1c67b6f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one prominent URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for watching a movie online, which is a common tactic in phishing and scam campaigns. The presence of a link farm and the ML classifier's high confidence further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=watch+waterworld+full+movie+online+f
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b7082a_b90deb2828e6496a98726b35ba646411.pdf
    • https://static.usrfiles.com/ugd/b8c837_20a9cdbc45ba47989ee0017c62c7f1c6.pdf
    • https://static.usrfiles.com/ugd/0779a3_a12340be6b5f491e856542eb65a87e40.pdf
    • https://static.usrfiles.com/ugd/45fd81_6bab123f4c5642e4a71b69ed72140bb5.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c1c2a3713ab43eab5e5e0d28b856f2c.pdf
    • https://static.usrfiles.com/ugd/f967ac_75ea4e47e22b498fb8a85b80780497e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb3f081d440445e785ead5b9b7aed636.pdf
    • https://static.usrfiles.com/ugd/b8c837_6371cab9a18e4de4afbad73d6b44d57c.pdf
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/99679891340.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/dimugezamafugusabu.pdf
    • https://cdn.shopify.com/s/files/1/0464/6597/4440/files/questes_sobre_independencia_dos_estados_unidos_8_ano.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/checkbox_android_custom.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/kuvirigurovikogage.pdf
    • https://cdn.shopify.com/s/files/1/0430/7887/7337/files/62953504579.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6265/files/vepimuvefofexemokobe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/duel_of_the_fates_sheet_music_easy.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8836/files/how_to_take_lipodrene.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006098.bin
87a8441e0326e5ad426d0ac38a76b9b6c54c28aff167599994664c0df9f08c4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6098 5248 bytes
font_01_sfnt_off00007263.bin
d2dc58cd467d74d29ae4d51c74e9473383dd36076967eaae98ee68f9178d049c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7263 11660 bytes

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